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AS Biology
Section 1 ­ Biological Molecules

Proteins:
Proteins are made of amino acids
There are 20 different amino acids
All amino acids contain:
Carbon
Hydrogen
Oxygen
Nitrogen
And some contain Sulphur

Structure of an Amino Acid:




Every amino acid contains an amino group and a carboxylic acid group
All…

Page 2

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AS Biology
Section 1 ­ Biological Molecules

Proteins can be up to several hundred amino acids long
The order of the amino acids in a protein determines its structure and the structure
of the protein determines how it works.
The primary structure of an amino acid is the order in…

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